AP8801M8G-13 Diodes Inc, AP8801M8G-13 Datasheet - Page 5

• Manufacturer Part Number: AP8801M8G-13
• Description: IC LED DRIVER HIGH BRIGHT 8MSOP
• Manufacturer: Diodes Inc
• Type: HBLED Driverr

Specifications of AP8801M8G-13

• Constant Current: Yes
• Topology: PWM, Step-Down (Buck)
• Number Of Outputs: 1
• Internal Driver: Yes
• Type - Primary: Backlight
• Type - Secondary: High Brightness LED (HBLED)
• Frequency: 500kHz
• Voltage - Supply: 8 V ~ 48 V
• Voltage - Output: 48V
• Mounting Type: Surface Mount
• Package / Case: 8-MSOP, Micro8™, 8-uMAX, 8-uSOP,
• Operating Temperature: -40°C ~ 105°C
• Current - Output / Channel: 500mA
• Internal Switch(s): Yes
• Efficiency: 92%
• High Level Output Current: 500 mA
• Operating Supply Voltage: 8 V to 48 V
• Maximum Supply Current: 120 uA
• Maximum Operating Temperature: + 105 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Dimming Control Type: PWM / DC
• Driver Case Style: MSOP
• Rohs Compliant: Yes
• Led Driver Application: Commercial, Industrial Lighting
• No. Of Outputs: 1
• Output Current: 500mA
• Operating Temperature Range: -40°C To +105°C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: AP8801M8GDITR

Application Information
LED Current Control
The LED current is controlled by the resistor RSET in Figure 1 connected between V
average output current in the LED(s) is defined as:
If the CTRL pin is driven by an external voltage (lower than 2.5V), the average LED current is:
AP8801 Rev. 4
DS31765
I
I
LED
LED
600
500
400
300
200
100
=
=
0
R
V
V
0
V
THD
CTRL
SET
REF
0.15 0.3 0.45 0.6 0.75 0.9 1.05 1.2 1.35 1.5 1.65 1.8 1.95 2.1 2.25 2.4 2.55 2.7 2.85
R
V
THD
SET
0.4
0.47
0.47
0.56
0.68
0.68
Figure 3: LED Current setting Vs R
0.82
0.82
0.82
1
1
1
LED current Versus RSET and VCTRL
1.2
1.2
RSET value [Ohms ]
1.2
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1.5
1.5
1.5
5 of 11
2
2
2
500mA LED Step-down Converter
SET
and V
CTRL
3
3
3
3
IN
and SET. The nominal
DECEMBER 2009
LED current @
VCTRL = 1.25V
LED current @
VCTRL = 2.5V
LED current @
VCTRL = 0.625V
©
AP8801
Diodes Incorporated